Sensitized element and mounting therefor



ocrd 13,1925. l 1,557,346

F. SCHWANHAUSSER l l l T fl ATTORNEYS Oct. 13, 1925. 1,557,346

F. scHwANHAussER SBNSITIZED ELEMENT AND MOUNTING THEREFOR 2 Sheets-Shui2 Filed'May 5, 1921 A TTOHNE YS l plane.

Patented Oct. 13, 1925.

"Um'rsn STATES PATENT OFFICE.

or m Yoax, N. Y., Assrenon To' RUSLI'NG WOOD, oF NEW YORK, N. Y.

sm No uma marron.

Ynieuwe um my e, 1an. sum1 lo. 457,21.

\ T0593 wwm'z't may (zwem:

Beit liniown that I,l `mais Schwinn'- musann; n'oitilen of the ntdStates, and l of the city olf'New York, borough fafafllniifrm, county ofNew York,- and Statt/.foi New York; have` invented a new and originalSensitized ElementiandMounting'lhereforilewhich the following is a Aclear, and enact deeeription.

0 My indexation relates to "d mounting rfor a semitiheddomenand aims toprovide new and useful improvements in connection with sach mounting;

n to' schwellrments whenkutilized i tograplric gement wor it is weunderstood tlidtdriwlty has been experiended in donnection `with thesurface sgains which #In kimage is projected,V not bowing '5H 0f itslnsin x'aetly the same Thus the distance between a lens 9ndtln? snrfmo'vivies in this rpee't, and

hbwe'wer minute this `variation might be the ,same rtultstn a dstm'tinof the image Fm'fimrmore thesensiti elements heretofure have" numerousobincident to their unwieldy nature, ind it has thus been difficult tohandle these oleinmnts,4 aside from the fact that the weight vf the samebstended t emphsize the dstortlin d: in their* pimigl Where nel'ativ'elythin sensitized elements .were utilized to overcome the objectionimcdent to woight'the diskntion watsy such as to more 'than comebwt thebendidial restilts produced b'y tlmfutilia'atim off a light element,aside fron! the fact 'tint these elementsl became more readily damaged.

with this in view,- I have, while roposing aseiized'eieineht offextremely gg construction, neilily handled@ andiincorpnxting. qualitieseieuttmlly accidental dennys; provided a mwfng wleh whenutitdedrinnueetion with the? element afofmm, wilt retain-the snlefin :mehr @manneras io present 8f., dlketliI sura' free fondu:` :El unev, thus avoidingall distortion ofthe inge.

5 Ful-tin objects' onf my invention will beoonxtfapplrnh upon to: theannexed specification taken in connection with theA drawings whichlatterpresent one practicl embodiment of the same, and in which- Figure 1 is afront view of iin element and mounting therefor constructed in accordance with my invention. x

Figure 2 is a rear view of these parts.

Figure 3 is a side view of the same.

Figurev 4 is an enlarged sectional view taken along the line of FigureS5 and Figure 5 is a fragmentary detail view showing one of the elementsforming a part of my improved construction.

In these views the reference numeral 10 indicates a supporting surfacewhich may form a continuation of the supporting surface' upon whichtheprojecting apparatus rests, and securely carries coluinns 11 bracedby the members 12.

As to the element proposed, I utilize a thin fiexible sheet of aluminumlf3 which is coated with a sensitized solution permitting o its beingutilized for the purpose specified. Obviously a plate of this naturewill be' relatively easy to handle), and may be stored in a minimumamount of space, aside from the fact that its b' will be incapable ofbeing damaged in or in'ary umge.

Due to thel somewhat flexible nature of such a sheet of material,however, it will be @en that the same is liable to' become distorted,:md to avoid this objection "attention is invited to Figures' 1 to 4which illustrate a structure overcoming this difculty.

In these views the reference numeral 14 indicates a backing' for the'sheet of inziterial 13 which backing is'attached to the' columns ll iina manner hereinafter fioe fully speci- A series of brackets 15anearanged pref `el'ailwly along. one of' the side edges of the backing14,` and serve to support cliping members cdnsisti'gfof a pair' (if jaws16 pivoallfy Vse'culed one t'oj the otlie' as at 17. im attachmem ofthese cismpisg meifibefs tothe bracket 15 is aiifor'dcd by any suitablemeans Such est Seres thm-md Beit 1s xt'endfng transvrsly tltugh theljaws 16, mi enen ot the wicketsv 15|,y ai thumb screw 19 co-operateswith th outer. end of auch dus@ 1s and f the faces of the arm 21 oftbe-bracket 20 where` by both of these latter brackets may be moved awayfrom each other? y 'Thus upon a sensitive element 13 sbeing arrangedupon theouter face ofthe backing f14 the clamping meirbers associatedwith the :brackets tfmaybe caused to en# gage the adjacent one ofitsf'edg'es.'A The clamping members mounted i1 Un the arms 22 arealseausd to engage t e element 13 f adjacent itslo positefedge, r.. n to'which the set screw 24 is tiglich 25 will obviously "result the' am 22and clamping I,carried thereby being moved away trom' ther clam 'ngmembers attached te the bracket l15. is operation will be'contimieduntilthe element 13 be- 3 oomeataut" and dree'ixom all'unevennesaa thusobviously avoidingfall objections incidnltto 'a distortionbf the image.

It will be obvious thatinzsome instances it might Ybeldeeiifable to:remov'zthe sensitized and'ekments the same,

as if this lis it will be noted :that @le operaiion may' be aecomplished.by virtue -o .the fact, reference being-had tu Figure; that'oollars 25are slid- 40 ably mounted uponthe columns 11 and that they mayberetained atv any desirable .point in the lengthr of these columns bymeans'of a estesi-ew 26 vided forthis pui-pele.:` A

ehmeliron -is eaehpairfaof ll'x'omthie itwiilbe seen that I haveprimarily A. ed ascreenin the-nau,ture of a overcome all.oblectiqnsancidentto weight, it being also noted ,that -by means'of myimproved y, qt ingesting this screen will be properly' eld-at a}ltimesiduring the exposurethereeii .A 4

fr i Qbvipiily; simmons madicatiens .of

the collars 25 andthe backing `element' 14 n l isili structure mightreadily be resorted to with-,"5` out in the least de arting fromthespirit of my invention, w 'ch I claim as: 1. A mounting, including abneketsfswmdf-"M t i backin and adjacen un.; thereo clamping memberssecured to brackets, Slidclmpiea. i 4, prising a pair of jaws pivotallysec to zthe other.

wiindil n ding' l brackets secured to the rear face of -4 y backingLo--w1 side thereo one of said b plurality of partee f i lie olerlampingme z 1M iamngd the side' of said 'elementg L plurality() artsmoyablyfeecartd L arid means orfmqvingisei speelt-'nimh other; .l 8. ltiling., if'. *Hilf-V braclxets secured tbmtbef W00 one of said iplurality of parte Lhe okthertclllamga In .lu a rac ets, e tpm" M'- Ymetido-edge saaie' L,

a lunlxtX of gestehen asetscmtmbrm. i

l uw askin and ed'mfoppnnte' WM' Y thereo ,certain df bnekets v J pas`afi-uu` f -the otlllalltiyset rear heefo said I: appone Bias' i i n Ia. Y nullitb-V 'i r porting columns, means for retaining said collars inproper position, s. backing, and means constituting a three-pointsuspension co-operating with said collars and backing 5 element.

8. A mounting, including supporting columns, collars slidably secured tosaid supporting columns, means for retaining said collars in propel'position, a backing, a channel member secured to said collars, an angle10 iron carried by said backing element, said channel member beingadapted to engage said angle member.

F. SCHWANHAUSSER.

